One‐Step Exfoliation Method for Plasmonic Activation of Large‐Area 2D Crystals DOI
Qiang Fu, Jiaqi Dai, Xinyu Huang

et al.

Advanced Science, Journal Year: 2022, Volume and Issue: 9(32)

Published: Sept. 14, 2022

Advanced exfoliation techniques are crucial for exploring the intrinsic properties and applications of 2D materials. Though recently discovered Au-enhanced technique provides an effective strategy preparation large-scale crystals, high cost gold hinders this method from being widely adopted in industrial applications. In addition, direct Au contact could significantly quench photoluminescence (PL) emission semiconductors. It is therefore to find alternative metals that can replace achieve efficient Here, authors present a one-step Ag-assisted efficiently exfoliate many large-area monolayers, where yield ratio comparable method. Differing film, however, surface roughness as-prepared Ag films on SiO2 /Si substrate much higher, which facilitates generation plasmons resulting nanostructures formed rough surface. More interestingly, strong coupling between semiconductor crystals (e.g., MoS2 , MoSe2 ) film leads unique PL enhancement has not been observed other mechanical techniques, be mainly attributed enhanced light-matter interaction as result extended propagation plasmonic polariton (SPP). This work lower-cost universal method, while at same time offering SPP-matter interactions.

Language: Английский

Excitons and emergent quantum phenomena in stacked 2D semiconductors DOI
Nathan P. Wilson, Wang Yao, Jie Shan

et al.

Nature, Journal Year: 2021, Volume and Issue: 599(7885), P. 383 - 392

Published: Nov. 17, 2021

Language: Английский

Citations

238
Emerging exciton physics in transition metal dichalcogenide heterobilayers DOI
Emma C. Regan, Danqing Wang,

Eunice Paik

et al.

Nature Reviews Materials, Journal Year: 2022, Volume and Issue: 7(10), P. 778 - 795

Published: May 4, 2022

Language: Английский

Citations

193
Excitons in semiconductor moiré superlattices DOI
Di Huang, Junho Choi, Chih‐Kang Shih

et al.

Nature Nanotechnology, Journal Year: 2022, Volume and Issue: 17(3), P. 227 - 238

Published: March 1, 2022

Language: Английский

Citations

189
Van der Waals heterostructure polaritons with moiré-induced nonlinearity DOI

Long Zhang,

Fengcheng Wu, Shaocong Hou

et al.

Nature, Journal Year: 2021, Volume and Issue: 591(7848), P. 61 - 65

Published: March 3, 2021

Language: Английский

Citations

156
Enhanced light–matter interaction in two-dimensional transition metal dichalcogenides DOI
Lujun Huang, Alex Krasnok, Andrea Alù

et al.

Reports on Progress in Physics, Journal Year: 2021, Volume and Issue: 85(4), P. 046401 - 046401

Published: Dec. 23, 2021

Two dimensional (2D) transition metal dichalcogenide (TMDC) materials, such as MoS2, WS2, MoSe2, and WSe2, have received extensive attention in the past decade due to their extraordinary physical properties. The unique properties make them become ideal materials for various electronic, photonic optoelectronic devices. However, performance is limited by relatively weak light-matter interactions atomically thin form factor. Resonant nanophotonic structures provide a viable way address this issue enhance 2D TMDCs. Here, we an overview of research area, showcasing relevant applications, including exotic light emission, absorption scattering features. We start overviewing concept excitons 1L-TMDC fundamental theory cavity-enhanced followed discussion on recent progress enhanced strong coupling valleytronics. nature enables broad range ways tune its electric optical Thus, continue reviewing advances TMDC-based tunable Next, survey over narrow bandwidths using 1L or few-layer TMDCs, applications photovoltaics photodetectors. also review efforts engineering scattering, e.g., inducing Fano resonances, wavefront TMDCs either integrating resonant structures, plasmonic/Mie metasurfaces, directly patterning monolayer/few layers then intriguing different types van der Waals heterostructures, Finally, draw our opinion potential opportunities challenges rapidly developing field research.

Language: Английский

Citations

139
Moiré photonics and optoelectronics DOI
Luojun Du, Maciej R. Molas,

Zhiheng Huang

et al.

Science, Journal Year: 2023, Volume and Issue: 379(6639)

Published: March 31, 2023

Moiré superlattices, the artificial quantum materials, have provided a wide range of possibilities for exploration completely new physics and device architectures. In this Review, we focus on recent progress emerging moiré photonics optoelectronics, including but not limited to excitons, trions, polaritons; resonantly hybridized excitons; reconstructed collective excitations; strong mid- far-infrared photoresponses; terahertz single-photon detection; symmetry-breaking optoelectronics. We also discuss future opportunities research directions in field, such as developing advanced techniques probe emergent optoelectronics an individual supercell; exploring ferroelectric, magnetic, multiferroic systems; using external degrees freedom engineer properties exciting potential technological innovations.

Language: Английский

Citations

115
Optical absorption of interlayer excitons in transition-metal dichalcogenide heterostructures DOI
Elyse Barré, Ouri Karni, Erfu Liu

et al.

Science, Journal Year: 2022, Volume and Issue: 376(6591), P. 406 - 410

Published: April 21, 2022

Interlayer excitons, electron-hole pairs bound across two monolayer van der Waals semiconductors, offer promising electrical tunability and localizability. Because such excitons display weak overlap, most studies have examined only the lowest-energy through photoluminescence. We directly measured dielectric response of interlayer which we accessed using their static electric dipole moment. thereby determined an intrinsic radiative lifetime 0.40 nanoseconds for lowest direct-gap exciton in a tungsten diselenide/molybdenum diselenide heterostructure. found that differences field twist angle induced trends transition strengths energies, could be related to wave function moiré confinement, atomic reconstruction. Through comparison with photoluminescence spectra, this study identifies momentum-indirect emission mechanism. Characterization absorption is key applications relying on light-matter interactions.

Language: Английский

Citations

95
Tuning commensurability in twisted van der Waals bilayers DOI
Yanxing Li, Fan Zhang, Viet-Anh Ha

et al.

Nature, Journal Year: 2024, Volume and Issue: 625(7995), P. 494 - 499

Published: Jan. 17, 2024

Language: Английский

Citations

20
Twisted van der Waals Quantum Materials: Fundamentals, Tunability, and Applications DOI
Xueqian Sun, Manuka Suriyage, Ahmed Raza Khan

et al.

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(4), P. 1992 - 2079

Published: Feb. 9, 2024

Twisted van der Waals (vdW) quantum materials have emerged as a rapidly developing field of two-dimensional (2D) semiconductors. These establish new central research area and provide promising platform for studying phenomena investigating the engineering novel optoelectronic properties such single photon emission, nonlinear optical response, magnon physics, topological superconductivity. captivating electronic result from, can be tailored by, interlayer coupling using moiré patterns formed by vertically stacking atomic layers with controlled angle misorientation or lattice mismatch. Their outstanding high degree tunability position them compelling building blocks both compact quantum-enabled devices classical optoelectronics. This paper offers comprehensive review recent advancements in understanding manipulation twisted structures presents survey state-of-the-art on superlattices, encompassing interdisciplinary interests. It delves into fundamental theories, synthesis fabrication, visualization techniques, wide range physical exhibited these structures, focus their potential practical device integration applications ranging from information to biosensors, including optoelectronics modulators, light emitting diodes, lasers, photodetectors. highlights unique ability superlattices connect multiple disciplines, covering chemistry, electronics, optics, photonics, magnetism, physics. provides valuable resource researchers interested shedding characteristics transformative various fields.

Language: Английский

Citations

20
Confined Trions and Mott-Wigner States in a Purely Electrostatic Moiré Potential DOI
Natasha Kiper, Haydn S. Adlong, Arthur Christianen

et al.

Physical Review X, Journal Year: 2025, Volume and Issue: 15(1)

Published: March 5, 2025

Moiré heterostructures consisting of transition metal dichalcogenide (TMD) heterobilayers and homobilayers have emerged as a promising material platform to study correlated electronic states. Optical signatures strong correlations in the form Mott-Wigner states fractional Chern insulators already been observed TMD monolayers their twisted bilayers. In this work, we use moiré substrate containing hexagonal boron nitride (h-BN) interface externally generate superlattice potential for layer: The periodic structure ferroelectric domains h-BN creates purely electrostatic charge carriers. We find direct evidence induced emergence new excitonic resonances at integer fillings our observation an enhancement trion binding energy by ≃3 meV. A theoretical model exciton-electron interactions allows us directly determine modulation 30±5 meV from measured shift. obtain order linked filling factors ν=1/3 ν=2/3 through associated exciton umklapp resonances. Published American Physical Society 2025

Language: Английский

Citations

2